Lubricator



Aug. 6, 1940.

H. s. BERG LUBRICATOR Filed Sept. 22. 1936 Patent ed Aug. 6, 1940 UNITED STATES.

PATENT OFFICE 6 Claims.

, This invention relates more specifically to a device for expelling or purging worn lubricants, such as greases from roller bearings and the like,

A and at the same time to replenish the same with '5, a fresh lubricant.

A main object is to provide a device arranged to securely'hold in place a roller or ball bearing assembly and to expel the worn grease therefrom and supply by power means new grease thereto from a source of supply unconnected with thedevice. v

Another object is to provide a device having a plurality of lubricant 'inlet means whereby the device may be mounted in different positions for conveniently utilizing one or the other of said inlets.

Still another object is to provide a lubricating device, for roller bearing assemblies which is provided adjacent the lubricant inlet discharging. ports with an annular lubricantreservoir, whereby to uniformly distribute. the lubricant to the bearing assembly being operated upon.

Other objects and advantages will be apparent from the following description reference being 25 had to the accompanying drawing, in which,

v1Fig. 1 is a side elevation of my lubricating dece. Fig. 2 is a central vertical section through the lubricator.

Fig. 3 is a sectional plan taken on line 3-3 of Fig. 1.

Briefly, the lubricating device consists of a base member having an annular flange for the reception of a roller or ball bearing assembly. Mounted in the frame and' centrally disposed is a lubricantinlet tube threaded externally an having a check valve on its upper end and discharge ports at its lower end. A frusto-conical member is mounted on theinlet tube for clamping the bearing to be operated upon on the bearing re- .ceiving flange. An additional lubricant inlet is provided omthe base member having a check valve at its outerend and is disposed at substantially right angles tothe lubricantinlet tube. The discharge ports of the inlet tube and the inner end of the additional inletgterminating in an annular reservoir formed in the frame and surrounding L the'lower end of the inlet tube, whereby the lubriwill be uniformly distributed to the bearing being operated upon J Referring now more specifically to the drawing. 5 designates a base member preferably formed of 65 a non-corrodible metal, such as cast aluminum,

view or the lubricator cant when forced" through either of the inlets.

having an attaching base 6 for securing the de-f vicein rigid position on a suitable support (not shown). minates in a dished annularflange I for the re-' ceptionof a. bearing assembly 8 that is to be lubricated. Centrally mounted in the center of the base member is a vertically disposed lubricant. inlet tube 9 externally provided with a coarse threading I0, and at its upper inlet end with a ch'eckvalve H of the Alemite-Zerk type, its lower end being provided with a plurality of lubricant discharge ports l2.

Surrounding the lower end of the lubricant inlet tube 9 and formed in the base member is a cylindrical recess 13 forming alubricant reservoir, the discharge p'orts l2 opening into thesame, the. function of said reservoir being more particularly described further on.

Formed in the side wall ofthe base member is a lubricant inlet bore [4, its outer end being provided with a check valve i5, similar to the valve on the-inlet tube, and its inner end discharging into the reservoir I3.

, Threadingly engaging the inlet tube 9 l is a frusto-conical bearing holding member IS, the coarsely threaded 'tube permitting of a rapid movement of the holding member on the inlet tube. a

The operation of the device will be clearly apparent from the following. When a hearing assembly is to be operated upon the frusto- -conical ,holding member [6 is first moved from the inlet tube 9, and the bearing assembly mounted on the dished flange of the base member, the dished surface of the flange readily adapting itself to,bear-' ing assemblies of different sizes. The holding member is then replaced on the inlet tube and screwed down upon the inner ring l1 bearing as- The upper end of the base member ter- 1 sembly, the lower end entering the opening 'of said ring i1 and sealingthe same against the escape of lubricant therethrough during a lubrication operation, and at the same time firmly holding the bearing in position on the receiving. flange. On or the other of the lubricant inlets is then connected to a lubricant power apparatus, of 'usual type, or an ordinary grease gun, the

outer rings l1 and [8 of thebearing assembly, at the same time purging the bearing of its worn lubricant after completelyafilling' the reservoir l3 v will on further pressure distribute the lubricant evenly and uniformly between the inner and,the

lubricant, the surplus lubricant being readily re- .moved from the annular flange after a lubrication. By providing two lubricant inlets it will be possible to use either one that is most convenient,

according to the position in which the device is mounted on its support.

Further as I have illustrated and described my lubricating device as having two lubricant inlet openings leading to a bearing assembly being lubricated, it will vbe perfectly obvious that one of said inlets may be dispensed with if desired,

the single lubricant I claim: I 1. A bearing member lubricating device comprising a. base member having a dished seating flange for one end of a bearing assembly, said base member having an annular lubricant reserinlet functioning efliciently.

voir leading to the bearing, an externally threaded lubricant inlet tube having a valved upper end mounted in said base member, said tube having lubricant discharge ports in its lower end opening into saidreservoir-and means mounted on said inlet and engaging the other end of the bearing assembly for clamping saidbearing in place on said seating flange.

J 2'. A lubricating device for bearing assemblies comprising a-body' member having an annular dished flange at its upper end and a lubricant reservoir, a. tubular externally threaded lubricant inlet tube mounted on said body member, an inlet nipple on the upper end of said inlet tube, the

lower end of said tube'having a lubricant dis-' charge port leading to the reservoir of said body member; and a closure member-rotatably mounted on said tube for clamping the bearing on the a centrally disposed annular lubricant reservoir dishedflangeand sealing its central'opening.

3. A lubricating device for bearings comprising a body member having; an annular dished flange at its upper end, said body member providedwith opening into said flange, a tubular externally threaded lubricant inlet tube secured to said body. member having an inlet nippleat its upper end; the lower end of said tube having a lubricant dis- ;1 charge port opening into said reservoir, and a bearing; holding member rotatably mounted on said tube, said bearing member clamping the bearing in'-place on said dished flange and seal ing its' central opening against the escape of lubricant therethrough.

4. A lubricating device for bearingscomprising a base member having an annular flange for the reception of a bearing assembly, a hollow externally threaded lubricant inlet tube secured to said base member; said tubehaving an inlet nipple at its upper end and a lubricant discharge port at its lower end leading to said bearing, and a frusto-conical seating member for one end of the bearing mounted on the threaded lubricant inlet tube for clamping the bearing on the dished port at its lower end, saidbase member being provided with a lubricant recess. leading to the bearing, the port in said tube discharging into said recess, and a seating member disposed on u said tube for sealing the central opening in the bearing assembly and clamping the same in engagement with the seating flange.

6. A lubricant device for bearing assemblie comprisinga base member including a dishedv bearing support and a centrally disposed circular recess, a centrally and vertically disposed exter-' nally threaded hollow shaft mounted in the circular recess of said base member, the diameter of said shaft being less than the diameter'of said recess, the upper end of said recess opening into 'said dished bearing support,'the lower end of said shaft being provided with lubricant discharge ports opening into said recess, the upper end of said shaft having a lubricant inlet nipplefor introducing the lubricant under pressure into the recess and thence to the bearing, anda conical nut mounted on 'said shaft for engaging the upper end of a bearing assembly to hold the same on the bearing support during a lubricating operation and to seal its central opening against discharge of lubricant therethrough. n

' H. S. BERG. 

